2014
DOI: 10.4322/polimeros.2014.064
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Influência da natureza do rejeito agroindustrial fermentado por Xanthomonas axonopodis pv. manihotis nas propriedades das gomas xantana resultantes

Abstract: Resumo: Um destino para resíduos agro-industriais é usá-los como substratos fermentescíveis, diminuindo o custo na produção de produtos com alto valor agregado. Este trabalho avaliou a influência da natureza dos resíduos fermentescíveis e das cepas de Xanthomonas sobre a produção e propriedades do biopolímero resultante. A produção foi realizada em agitador orbital (250 rpm / 28 °C / 120 h) por fermentação de sacarose (controle), glicerina residual do biodiesel e resíduo líquido de sisal. Tanto a composição do… Show more

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Cited by 6 publications
(4 citation statements)
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“…The apparent viscosity of aqueous solutions of EPS was determined in different concentrations (5, 10, and 15 mg ml −1 ) and pH (3 and 7, with 10 mg ml −1 ) and shear rate of 25 at 1000 sec −1 . The effect of shear rate in the viscosity of solutions of EPS was described by the kinetic model of Ostwald–de Waele: μ = K (γ) n−1 , where K is the consistency index, n is the index the flow behavior, μ is the apparent viscosity and γ, to shear rate …”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…The apparent viscosity of aqueous solutions of EPS was determined in different concentrations (5, 10, and 15 mg ml −1 ) and pH (3 and 7, with 10 mg ml −1 ) and shear rate of 25 at 1000 sec −1 . The effect of shear rate in the viscosity of solutions of EPS was described by the kinetic model of Ostwald–de Waele: μ = K (γ) n−1 , where K is the consistency index, n is the index the flow behavior, μ is the apparent viscosity and γ, to shear rate …”
Section: Methodsmentioning
confidence: 99%
“…The effect of shear rate in the viscosity of solutions of EPS was described by the kinetic model of Ostwald-de Waele: μ = K (γ) nÀ1 , where K is the consistency index, n is the index the flow behavior, μ is the apparent viscosity and γ, to shear rate. [6,21] Molar masses of EPS 1 and 2, which are expressed by the weight average molar mass (M w ), number average molar mass (M n ) and polydispersity index (PDI = M w /M n ), were obtained by size-exclusion chromatography. [13,21] EPS filtered solution (0.1%, w/v; 0.45 μm) was prepared in Milli-Q water, and approximately, 50 μl was subjected to high-performance liquid chromatography (PerkinElmer Series 200) with an autosampler and refractive index detector (PerkinElmer Series 200, Shelton, USA), equipped with Shodex SB 803, 804, 805, 806 columns in series (Kawasaki-ku, Japan) with an oven temperature of 30°C were employed for separation.…”
Section: Rheological Analysis and Determination Of Molar Mass Distribmentioning
confidence: 99%
“…Os resíduos gerados nos processos agroindustriais representam perdas econômicas nos processos produtivos, podendo ocasionar problemas ambientais se não receberem destinação adequada (Ravindran & Jaiswal, 2016). Uma alternativa para o aproveitamento desses rejeitos é o desenvolvimento de novos produtos e a redução do custo da produção (Assis et al, 2014).…”
Section: Conclusãounclassified
“…No Brasil, a goma xantana utilizada é quase em sua totalidade importada. No entanto, o país tem um grande potencial para sua fabricação, pois apresenta grande disponibilidade de matéria-prima básica para sua produção (Assis et al, 2014 (Quintella et al, 2011). É possível estabelecer um mapa inicial de fontes de informação e conhecimento essenciais a uma maior competitividade de um determinado setor.…”
Section: Introductionunclassified